offload_task: log errors (#6620)

- Log any errors raised during offload_task

InvenTree/InvenTree/tasks.py

@@ -180,6 +180,8 @@ def offload_task(
     Returns:
         bool: True if the task was offloaded (or ran), False otherwise
     """
+    from InvenTree.exceptions import log_error
+
     try:
         import importlib
 
@@ -213,6 +215,7 @@ def offload_task(
             return False
         except Exception as exc:
             raise_warning(f"WARNING: '{taskname}' not offloaded due to {str(exc)}")
+            log_error('InvenTree.offload_task')
             return False
     else:
         if callable(taskname):
@@ -233,6 +236,7 @@ def offload_task(
             try:
                 _mod = importlib.import_module(app_mod)
             except ModuleNotFoundError:
+                log_error('InvenTree.offload_task')
                 raise_warning(
                     f"WARNING: '{taskname}' not started - No module named '{app_mod}'"
                 )
@@ -249,6 +253,7 @@ def offload_task(
                 if not _func:
                     _func = eval(func)  # pragma: no cover
             except NameError:
+                log_error('InvenTree.offload_task')
                 raise_warning(
                     f"WARNING: '{taskname}' not started - No function named '{func}'"
                 )
@@ -258,6 +263,7 @@ def offload_task(
         try:
             _func(*args, **kwargs)
         except Exception as exc:
+            log_error('InvenTree.offload_task')
             raise_warning(f"WARNING: '{taskname}' not started due to {str(exc)}")
             return False